Venetian blind equipment



Feb. 20, 1940. ROSENSTEIN 2,190,884

VENETIAN BLIND EQUIPMENT Filed April 16, 1938 2 Sheets-Sheet 1 A.ROSENSTEIN VENETIAN BLIND EQUIPMENT Feb. 20, 1940.

' Filed April 16, 1938 2 Sheets-Sheet 2 gwum vtom Z z'n Patented Feb.20.1mm

UNITED STATES 2,190,884 VENETIAN BLIND roulrtmn'r Albert Bosenstein,Lancaster, Pa., assignor of one-half to Morris Rosenstein and one-halfto George R. Smith, Jr., Lancaster, Pa.

Application April 16, 1938, Serial No.- 202,556

. 1 Claim. An object of the invention is to provide an equipment of thiskind including a tilt bar to-' gether with supporting brackets thereforand wherein one of said brackets is provided with means for coactionwith the bar to rock the same in either direction at will.

The invention consists in the details of construction and in thecombination and arrangement of the several parts of my improved Venetianblind equipment whereby certain important advantages are attained andthe device rendered simpler, less expensive and otherwise moreconvenient and advantageous for use, as

' will be hereinafter more fully set forth.

The novel features of my invention will hereinafter be definitelyclaimed.

.In order that my invention may be the better understood, I will now'proceed to describe the same with reference to the accompanyingdrawings, wherein:

Figure 1 is a view in top plan of a Venetian blind equipment constructedin accordance with an embodiment of my invention, the blind proper beingomitted except a fragmentary illustration of the conventional tapes;

Figure 2 is a view in side elevation of the Figure 7 is a fragmentarysectional view taken substantially on the line 'l-'I of Figure 4.

As disclosed in the accompanying drawings, I denotes a tilt bar ofdesired length and which is reduced at one end to provide a trunnion 2to engage within the open slot 3 of a bracket A. The portion of thebracket A provided with the $10113 is inwardly offset so as to permitthe desired engagement of the trunnion 2 with said bracket A when thebracket is secured with its flat face, against a sash or othersurface.In order to allow this bracket A to be secured in its position it isprovided in its body plate 4 with suitably positioned openings 5 throughwhich screws or other anchoring members are adapted to be directed inthe well known way.

The upper marginal portion of the plate II is defined by an inwardlydisposed flange 5 provided with suitably spaced openings I. Theseopenings 7 provide for the passage of screws or kindred frame.

anchored to the crown or top sill of a window The rear or inner marginof the body plate 4 is'also provided with an inwardly disposed flange 8having the openings 9 therethrough.

These openings 9 are for the passage of screws" or other fastening meanswhen it is desired to secure the bracket A to the face of the windowframe or sash.

The opposite extremity of the tilt bar I is formed to provide a portionI angular in cross section together with an extended trunnion H toengage within suitably positioned openings I2 provided in the body plateI4 of a box-like bracket B. The portion of this plate Id provided withthe opening I2 is also inwardly offset to compensate for the trunnion IIor, in other words, so that the trunnion I I will be free to contactwith the window frame when the securing members are disposed throughthis body plate I 4. This body plate I4 is provided with suitablypositioned openings I for the passage of screws or other desiredanchoring elements.

The plate I4 at its upper margin is defined by an inwardly disposedflange or wall I6 provided with suitably positioned openings 11 to allowthe bracket B to be secured to the top or crown piece of a window frameor sill as is illustrated in Figure 3 of the drawings. The ends of theplate I 4 are also defined by the inwardly disposed flanges I8 and theinner flange I8 is also provided with suitably positioned openings 19 toallow the bracket B to be anchored to the outer face of a window frameor sash.

The front and rear flanges I8 are provided with suitably positionedopenings 20 which provide mountings for the opposite end portions of theelongated screw 2!. The forward end portion of the screw 21 is reduced,as at 22, and extends outwardly beyond the forward flange I 8. Fixed tothis extended portion 22 for rotation therewith is a pulley 23 aroundwhich is disposed an operating cord 24. y

The screw 2| threads through a nut or member 25, said nut or member 25being held against rotation by having a flat face 26 positioned forcontact with the plate. l4. This nut or member 25' is provided withan'outstanding pin 21 disengaged with the portion In of the bar i sothat said arm 29 and bar I have unitary rocking movement. By proper pullon the cord 24 the screw 2I can be'rotated in either direction'and inaccordance with suchdirection of rotation the member or nut 25 will movelengthwise of the screw 2.]. This movement of the nut 25 along the screw2! tilts the bar I in desired direction and for a required extent for apurpose to, be hereinafter more particularly mentioned.

Fixed to the bar I at desired spaced points thereon are the tilt tablesT. As herein disclosed, each of these tables T comprises a platepossessing the required strength and rigidity but preferably made ofmetal. This plate 30 also preferably engages the bar I from above and issecurely anchored thereto by the rivets 3| although any other means ofattachment may be employed which may comply with the requirements.

The central portion of the plate 30 is cut out, as at 32, wherebyprovision is made for the swivelled mounting upon the bar I of a guidepulley G. This guide pulley G, as herein disclosed comprises asubstantially U-shaped plate 33 which has direct contact with the bar Ifrom above, and the side members 34 of said plate below the bar I aretied together by the interposed rivets 35 or the like. These rivets 35closely approach the bar I so that the guide pulley is effectivelymaintained in desired assembly. It is also to be stated that the plate33 is of a width substantially equal to the length of the opening 32 sothat the guide pulley G is also effectively held against movementlengthwise of the bar I and thereby further maintained in desiredassembly.

The lower portions of the side members 34 have rotatably supportedtherebetween in a conventional manner a grooved roller 36 over whichpasses the operating cord for raising the slats of the blind.

As the construction of a Venetian blind is well known it is not believednecessary to describe the particular means as herein described andillustrated to be highly eflicient and practical.

As illustrated in Figure 2, the cords 39 for.raising the blind are twoin number as is the general practice although, of course,'this numbermay'be increased if the requirements of practice so necessitate and thisis also true in connection with the tilt tables T.

The cords 39 are directed to pass over and end guide pulley P whichisalso swivelled or swingingly engaged with the bar I. This pulley Pineludes a plate 40 returned upon itself to provide a sleeve portion 4|to engage around the bar I from above and held therein by a cross rivetor pin 42. The inner end portions of the side members 40 of the pulley Phave rotatably supported therebetween the grooved roller 43 over whichthe cords 39 are directed from above. The plates 40 also have pivotallysupported therebetween a depending lock plate 44 disposed on a downwardand forward incline with its lower free marginal edge beveled. Thisplate 44 has its downward swinging movement limited by contact with aninwardly disposed lug 45 struck from one of the side plates 40 and thislimit of movement is such as to assure the lower free edge of the lockplate 44 being sufliciently close to the cords passing over the pulley43 to readily engage said cords to hold the slats of the blind inselective-raised position. In effecting this lock the cords are firstswung by the operator toward the plate 44 to cause the lower free end toslightly impinge the cords so that upon release of the cords by theoperator the weight of the blind proper will cause the plate 44 to swingupwardly and thus bind the cords against the pulley 43.

It is to be particularly pointed out that by having the guide pulley Pmounted in swivelled connection upon the tilt bar I the same willreadily swing to compensate for the different tilting positions intowhich the slats may have been adjusted so as to allow the desiredraising or lowering of the blind proper without restoring the slats towhat is known as a horizontal position. A further advantage inthemounting of this pulley P is that a direct down pull is not requiredbut, on the contrary, the pull can be at any angle. The pulley P, ashereindisclosed, is maintained in its desired position upon the bar I bythe upstanding pots 46 between which the sleeve 4| of the pulley Psnugly engages. These lugs 46, as herein disclosed, are struck up fromthe bar I although they may be otherwise provided.

To further support the tilt bar I at the end thereof which engages thebracket B, the central portion of the plate I4 of said bracket B isprovided with a forwardly extended arm 53. This arm 53 is of a length toterminate beyond the portion I0 of the bar I and the outer or free endportion of this arm 53 is formed with an upstanding saddle 54 whichengages the bar I from below.

The top flange 6 of the bracket A and the top flange I 6 of the bracketB adjacent their forward end portions are provided with the openings orslots 55 through each of which is adapted to be inserted from above thedepending arm 56 carried by a bracket 51 secured to the rear face of a'facia board or panel 58 of desired design. This board or panel 58 is ofsuch dimension as to substantially conceal the applied equipment yetwithout the necessity of employing a complete box structure.

From the foregoing description it is thought to be obvious that aVenetian blind equipment constructed in accordance with my invention isparticularly well adapted for use by reason of the convenience andfacility with which it may be assembled and operated, and it will alsobe obvious that my invention is susceptible of some change andmodification without departing from the principles and spirit thereofand for this reason I do not wish to be understood as limiting myself tothe precise arrangement and formation of the several parts herein shownin carrying out my invention in practice except as hereinafter claimed.

I claim:

Venetian blind equipment comprising a tilt bar, supporting means for thebar including a box-like bracket having its inner face open and havingan outer face wall provided with means with which the tilt bar directlyengages, an upstanding slotted rock bar carried by the tilt bar andpositioned within the box-like bracket, a screw rotatably supportedwithin the box-like bracket and disposed substantially at right anglesto the tilt bar, a member in threaded engagement with the screw formovement lengthwise thereof upon rotation of the screw, said membercoacting with the outer face wall of the bracket to hold the memberagainst rotation, and a part carried by said member and extending intothe slot of the rock bar to rock the tiltbar as said member moves alongthe screw.

ALBERT L. ROSENSTEIIN.

